Electronic cigarette battery



FIG. 1 is a first perspective view of an electronic cigarette battery showing my design;

FIG. 2 is a second perspective view thereof

FIG. 3 is a front view thereof

FIG. 4 is a back view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 is an enlarged view of the selected portion in FIG. 1.

The evenly-spaced broken lines in the drawings depict portions of the electronic cigarette battery that form no part of the claimed design. The dash-dot broken lines surrounding the enlarged view are for annotative purpose only and form no part of the claimed design. 

CLAIM The ornamental design for an electronic cigarette battery, as shown and described. 